Death Defied (Passive)

Upon dying, Karthus enters a spirit form that allows him to continue casting spells for 7 seconds.

Lay Waste (Q)

Cooldown: 0

Cost: 20/26/32/38/44

Range: 875

Creates a delayed blast at Karthus' cursor position dealing 45/65/85/105/125(+0.3) magic damage to each nearby enemy.If the blast hits only a single unit it deals double damage.

Wall of Pain (W)

Cooldown: 15

Cost: 70

Range: 1000

Creates a wall that lasts for 5 seconds. Enemies that pass through the wall have their Magic Resist reduced by 15% and Movement Speed reduced by 40/50/60/70/80% for 5 seconds (their Movement Speed gradually recovers over the duration).